Base | Representation |
---|---|
bin | 110001111111… |
… | …100001111111 |
3 | 220122211001201 |
4 | 301333201333 |
5 | 11323332104 |
6 | 1144520331 |
7 | 216251545 |
oct | 61774177 |
9 | 26584051 |
10 | 13105279 |
11 | 7441210 |
12 | 44800a7 |
13 | 293b105 |
14 | 1a51d95 |
15 | 123d0a4 |
hex | c7f87f |
13105279 has 8 divisors (see below), whose sum is σ = 14373072. Its totient is φ = 11850240.
The previous prime is 13105277. The next prime is 13105319. The reversal of 13105279 is 97250131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 13105279 - 21 = 13105277 is a prime.
It is a Duffinian number.
It is a zygodrome in base 2.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13105273) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964 + ... + 5209.
It is an arithmetic number, because the mean of its divisors is an integer number (1796634).
Almost surely, 213105279 is an apocalyptic number.
13105279 is a deficient number, since it is larger than the sum of its proper divisors (1267793).
13105279 is a wasteful number, since it uses less digits than its factorization.
13105279 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6377.
The product of its (nonzero) digits is 1890, while the sum is 28.
The square root of 13105279 is about 3620.1214068039. The cubic root of 13105279 is about 235.7664967556.
It can be divided in two parts, 131052 and 79, that added together give a palindrome (131131).
The spelling of 13105279 in words is "thirteen million, one hundred five thousand, two hundred seventy-nine".
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